Abstract
Many cases of the malignant lymphoma of the orbit involve a low grade malignancy and it is very hard to differentiate between malignant lymphoma or pseudo lymphoma. Sometimes we can not make a differential diagnosis of these two diseases by microscopic study only.
Recently immunological genetic study has been used to diagnose malignat lymphoma. We encountered a 79-year-old man with malignant lymphoma. Seven years ago, he had an orbital tumor on the right side. That tumor was diagnosed as pseudo lymphoma. Then again he an orbital tumor developed on the left side. We extirpated the tumor and were able to dignose malignant lymphoma by immunological genetic study.
In this paper, we present a case of malignant lymphoma and discuss the diagnosis and treatment.
